In the current Meta this building as little to no purpose:
- % reduction on buying new champions is good BUT generally comes too late/ you run adventurer perk very often (which I do)/ you run wanderlust which negates the use of this bonus.
- 25% on 1 exp per season is worthless. Only heroes that are going to take advntage of it are governors. I rarely use governors unless one hero gets injured badly before level 4, cause i'm not going to go adventuring with a worthless champ/governor until he reaches level 12 to maybe get a rare chance at choosing PotG.
Used it once. Was actually useful, had the syndicate event in a game and had recruited a lot of heroes including a weak governor style hero (gildar/research per season), got her to level 4 and made her sat in one heavy production city with a black market. Shed led a small army to to kill the remnant of some syndicate troops.
I would say this building is more than situational. Making it to spawn a new quest every 30 turns, give xp to all stationed units, give a free trait to any hero visiting the town could improve its efficency.